Flood control and urban waterway management are an essential part of urban planning and a quality of life issue for many residents living in floodplain areas. Flood control management issues are of great concern to businesses and individuals located in an area because a flood can halt economic activity and ordinary life within hours of heavy rain events. Some residents are affected by flooding more than others and this can have regional impacts based on the geomorphology of the affected areas. For example, an area of ​​a city may not be as affected by flooding because that location may be in a 100-year floodplain area and this means that a major flood event will only occur in that area about once every 100 years. years. Similarly, other areas of a city may be in a 10- or 5-year floodplain zone and are at greater risk of experiencing flooding of higher magnitude and frequency. These often flood-prone areas are particularly important for the regional flood control plan; however all regions, regardless of flood risks, could potentially be affected by policy considerations when designing a waterway management plan. Neighborhoods adjacent to waterways but experiencing only sporadic flooding events may be located in a hydrologic region advantageous for preventative flood control management. Urban planners have a variety of options for controlling urban waterways, and each option has advantages and disadvantages. An important consideration will be the cost of the water management project versus the perceived benefits of reducing flood events. Flood control projects must consider the neighborhoods affected and the total costs incurred by the municipality and the......middle of paper......Without natural vegetation that naturally slows the rate of water movement, these Concrete block drying stream beds could actually cause more flooding events in low-lying areas of the city, rapidly removing water from other areas (Guo, 2001). Flow slowing structures have also been built to limit the adverse downstream effects of urban runoff and increased flow rates. These facilities can eliminate particulate pollution contained in storm runoff (Williams & Wise, 2006; Ferguson, 1998). Retention basins are small reservoirs of water with a capacity of no more than 10 acres and equipped with at least one outlet and one emergency spillway because multiple outlets allow for greater control of stormwater runoff. The main difference between a detention basin and a retention basin is that they are larger and release stored water at a slower rate.